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810 articles found
Food & nutrition
Dieting is considered an important issue for many people today, and various methods have been proposed for losing weight and maintaining health. However, improper dieting methods n
Film & media
In cinematography, lighting is one of the core elements, playing an important role in determining the quality and atmosphere of the imagery. Lighting can convey emotions and storie
Physics
Plasma is the 4th state of matter, following solids, liquids, and gases, and is a unique state with electrical and high-temperature characteristics. These characteristics give plas
Chemistry
Corrosion is the process by which a metal reacts chemically with its surroundings, loses its original properties, and breaks down. This piece covers how iron rusts, what happens wh
Economics
The law of diminishing marginal utility describes how the extra satisfaction from getting one more of something keeps shrinking. We look at what marginal utility means, how the ide
Information technology
Why doesn’t doubling your cores double your speed? Amdahl’s Law shows that the serial portion you cannot parallelize caps the overall speedup at 1/s. This piece covers the formula,
Earth science
Isostasy is the idea that the crust floats on the denser mantle and balances at a height set by its thickness and density. This piece covers how the theory arose, the Airy and Prat
Statistics
What the null and alternative hypotheses are, how to set them up for hypothesis testing, how significance level and statistical power shape the results, and three worked examples f
Statistics
Public opinion polls are powerful tools for collecting and analyzing our thoughts and opinions in modern society. They play an important role across politics, the economy, and soci
Library & information science
Link rot is the phenomenon in which web addresses, over time, no longer lead to the material they once pointed to. We look at what link rot is and why it happens, how large the pro
Physics
Black holes are among the most mysterious objects in the universe. This article looks at how they form, from dying massive stars to the first stars after the Big Bang, traces the h
General knowledge
In a business environment, a successful proposal serves as an important tool that determines a company's performance. Proposals play a central role in securing new contracts or inv
